C语言和MATLAB的联合编程在水轮机特性曲线绘制与转换中的应用  

United programming with C-language and MATLAB software and its application in plotting and converting of characteristic curves of hydraulic turbines

作　　者：齐学义[1] 吴江[1] 蔡艾江[1] 

机构地区：[1]兰州理工大学流体动力与控制学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2005年第6期51-54,共4页Journal of Lanzhou University of Technology

基　　金：兰州理工大学学术梯队及特色研究方向的重点资助

摘　　要：利用C语言编程与MATLAB的强大数据库相结合,阐述了运用C语言对MATLAB内部函数进行调用的基本方法.研究了不同数值处理方法的曲线拟合对水轮机特性曲线绘制与转换效果的影响,并提出了水轮机特性曲线的插值与拟合的新方法;以此结合MATLAB工具箱中三次样条插值函数和一般多项式插值函数分别进行了编程,并就具体工程实例进行了水轮机特性曲线的转换与绘制.由此不仅验证了该方法的可行性,而且效果很好;同时也得出了极坐标下的三次样条远优于直角坐标下的多项式.Combining C-language programming with the strong database of MATLAB, the authors expa- tiated on the basic principles of calling intrinsic functions of MATLAB with C-Language. The influence of curve fitting methods on the results of plotting drawing and converting characteristic curves of hydraulic turbines,and a new interpolation and curve fitting method for foregoing data processing was proposed. By means of both the cubic spline functions in the toolbox of MATLAB and the ordinary polynomial interpolation functions, the programming was performed, respectively, and used to plot and convert the characteristic curves of hydraulic turbines as an illustration of its engineering application. By doing so,not only the feasibility of this method was tesified,but also a good effect was resulted. Meanwhile,it is also concluded that result of using cubic spline in polar coordinate system is better than that of polynomial one in Cartesian coordinate system.

关 键 词：水轮机特性曲线 C语言 MATLAB 联合编程 

分 类 号：TK730.2[交通运输工程—轮机工程]